公开(公告)号：US20060183446A1

公开(公告)日：2006-08-17

申请号：US11058966

申请日：2005-02-16

申请人： Kim Beumer ,  Peter Kipfelsberger ,  Philip Hisayasu

发明人： Kim Beumer ,  Peter Kipfelsberger ,  Philip Hisayasu

IPC分类号： H04B17/02

CPC分类号： H04B1/0053 ,  H03F1/0205 ,  H03F3/191 ,  H03F2200/468 ,  H03G3/30 ,  H04B1/005

摘要： A device for measuring voltage levels includes a root mean square (RMS) detector. The RMS detector includes a linear multiplier, a log converter, a low-pass filter and a temperature compensator. The linear multiplier multiplies a voltage of an input signal by the voltage of the input signal. The low-pass filter couples to an output of the linear multiplier. The log converter generates a logarithmic signal having a voltage that is logarithmically related to a voltage of an output of the low-pass filter. The temperature compensator adjusts the logarithmic signal based on a temperature of the RMS detector. The RMS detector is capable of determine an RMS voltage level of the input signal.

摘要翻译： 用于测量电压电平的装置包括均方根（RMS）检测器。 RMS检测器包括线性乘法器，对数转换器，低通滤波器和温度补偿器。 线性乘法器将输入信号的电压乘以输入信号的电压。 低通滤波器耦合到线性乘法器的输出。 对数转换器产生具有与低通滤波器的输出的电压对数相关的电压的对数信号。 温度补偿器根据RMS检测器的温度调节对数信号。 RMS检测器能够确定输入信号的RMS电压电平。

公开(公告)号：US07078960B2

公开(公告)日：2006-07-18

申请号：US10629019

申请日：2003-07-28

申请人： R. William Ezell

发明人： R. William Ezell

IPC分类号： H04B1/10

CPC分类号： H03H11/0472 ,  H03H2210/012 ,  H03H2210/021 ,  H03H2210/033 ,  H03H2210/036 ,  H03H2210/046 ,  H03J2200/07 ,  H03J2200/28 ,  H03J2200/29

摘要： A method for storing a result of a tuning process includes generating a first characteristic signal using a signal generator. The method also includes generating a second characteristic signal using a master circuit, wherein the master circuit generates the second characteristic signal in response to a current signal. The method further includes determining an adjustment to the current signal based at least in part upon the first and second characteristic signals, and storing a digital value representing the adjustment.

摘要翻译： 用于存储调谐处理结果的方法包括使用信号发生器产生第一特征信号。 该方法还包括使用主电路产生第二特征信号，其中主电路响应于当前信号产生第二特征信号。 该方法还包括至少部分地基于第一和第二特征信号来确定对当前信号的调整，以及存储表示调整的数字值。

公开(公告)号：US20060116099A1

公开(公告)日：2006-06-01

申请号：US11325854

申请日：2006-01-05

申请人： David Dessert ,  John Schneider

发明人： David Dessert ,  John Schneider

IPC分类号： H04B15/06

CPC分类号： H03J7/02 ,  H03D7/161 ,  H04B1/12 ,  H04B15/06

摘要： The present invention is directed to a system and method of reducing frequency interference in a circuit when the harmonics of at least two frequencies could cause interference when such harmonics interact with each other. In one embodiment, a determination is made as to which harmonic could possibly support such interference, and based upon the determined harmonic, determining which combination within said determined harmonic is likely to cause the interference.

摘要翻译： 本发明涉及一种减小电路中的频率干扰的系统和方法，当这种谐波相互作用时，当至少两个频率的谐波可能引起干扰。 在一个实施例中，确定哪些谐波可能支持这种干扰，并且基于所确定的谐波，确定所述确定的谐波中的哪个组合可能导致干扰。

公开(公告)号：US20060068708A1

公开(公告)日：2006-03-30

申请号：US10952185

申请日：2004-09-28

申请人： David Dessert ,  John Schneider

发明人： David Dessert ,  John Schneider

IPC分类号： H04B1/00 ,  H04B1/10 ,  H04B15/00

CPC分类号： H04B15/06 ,  H04B1/28

摘要： Disclosed are systems and methods of eliminating or reducing interference resulting from harmonics of local oscillator frequencies of mixers. In one embodiment, a determination is made as to a zone or zones in which harmonics result in undesired spur generation. Inter-tuner spurs and intra-tuner spurs may be identified such that frequency information of the identified spurs may be utilized to define a plurality of exclusion zones. LO frequencies may subsequently be efficiently selected in view of the exclusion zone information. Embodiments may also determine a score for identified spurs which may be used to optimally select from within a set of spur-generating local oscillator frequencies.

摘要翻译： 公开了消除或减少由混频器的本地振荡器频率的谐波引起的干扰的系统和方法。 在一个实施例中，确定谐波导致不想要的支线产生的区域或区域。 可以识别相互调谐器之间的杂散和调谐器内部的杂散，使得所识别的杂散的频率信息可以用于定义多个排除区。 考虑到排除区信息，随后可以有效地选择LO频率。 实施例还可以确定用于所识别的杂散的分数，其可以用于在一组产生振荡的本地振荡器频率内进行最佳选择。

公开(公告)号：US06973288B1

公开(公告)日：2005-12-06

申请号：US09970311

申请日：2001-10-03

申请人： Tom L. Davis ,  Kim E. Beumer ,  Carey Ritchey

发明人： Tom L. Davis ,  Kim E. Beumer ,  Carey Ritchey

IPC分类号： H03G1/00 ,  H04B17/00

CPC分类号： H03H7/255 ,  H03G1/0052

摘要： Linearizer circuitry is disclosed for providing control signal outputs to operate a controllable attenuator throughout a relatively large dynamic range while maintaining a relatively consistent return loss. Preferred embodiment linearizer circuitry provides a series control current and a shunt control current for coupling to a PIN diode attenuator, such as may be configured in a π network or a T network. Preferably, differential pairs are utilized in providing each of the control current outputs.

摘要翻译： 公开了线性化电路，用于提供控制信号输出以在整个相对大的动态范围内操作可控衰减器，同时保持相对一致的回波损耗。 优选实施例线性化电路提供串联控制电流和分流控制电流，用于耦合到PIN二极管衰减器，诸如可以配置在pi网络或T网络中。 优选地，差分对用于提供每个控制电流输出。

公开(公告)号：US06906594B2

公开(公告)日：2005-06-14

申请号：US10454195

申请日：2003-06-04

申请人： Michael D. Womac

发明人： Michael D. Womac

IPC分类号： H03F1/02 ,  H03F1/30 ,  H03F1/32 ,  H03F3/04

CPC分类号： H03F1/0272 ,  H03F1/302 ,  H03F1/32

摘要： A method for extending the linear range of operation of an amplifier includes monitoring a transistor voltage of a transistor of an amplifier. The transistor is coupled to a variable current source applying a bias current to the transistor. The method continues by monitoring an output voltage of the amplifier and by determining whether the transistor voltage is within a predetermined range of the output voltage. If the transistor voltage is not within a predetermined range of the output voltage, the method continues by decreasing the bias current applied to the transistor. If the transistor voltage is within a predetermined range of the output voltage and if the bias current has not previously been decreased, the method continues by increasing the bias current applied to the transistor.

摘要翻译： 用于扩展放大器的线性范围的方法包括监视放大器晶体管的晶体管电压。 晶体管耦合到向晶体管施加偏置电流的可变电流源。 该方法通过监视放大器的输出电压并且通过确定晶体管电压是否在输出电压的预定范围内来继续。 如果晶体管电压不在输出电压的预定范围内，则该方法通过减小施加到晶体管的偏置电流而继续。 如果晶体管电压在输出电压的预定范围内，并且如果偏置电流以前没有减小，则该方法通过增加施加到晶体管的偏置电流来继续。

公开(公告)号：US20050024252A1

公开(公告)日：2005-02-03

申请号：US10629019

申请日：2003-07-28

申请人： R. Ezell

发明人： R. Ezell

IPC分类号： H03H11/04 ,  H03H11/12 ,  H03M1/56

CPC分类号： H03H11/0472 ,  H03H2210/012 ,  H03H2210/021 ,  H03H2210/033 ,  H03H2210/036 ,  H03H2210/046 ,  H03J2200/07 ,  H03J2200/28 ,  H03J2200/29

摘要： A method for storing a result of a tuning process includes generating a first characteristic signal using a signal generator. The method also includes generating a second characteristic signal using a master circuit, wherein the master circuit generates the second characteristic signal in response to a current signal. The method further includes determining an adjustment to the current signal based at least in part upon the first and second characteristic signals, and storing a digital value representing the adjustment.

摘要翻译： 用于存储调谐处理结果的方法包括使用信号发生器产生第一特征信号。 该方法还包括使用主电路产生第二特征信号，其中主电路响应于当前信号产生第二特征信号。 该方法还包括至少部分地基于第一和第二特征信号来确定对当前信号的调整，以及存储表示调整的数字值。

公开(公告)号：US20040117861A1

公开(公告)日：2004-06-17

申请号：US10319118

申请日：2002-12-13

申请人： Microtune (Texas), L.P.

发明人： David Dessert ,  John Schneider

IPC分类号： H04B001/04

CPC分类号： H03J7/02 ,  H03D7/161 ,  H04B1/12 ,  H04B15/06

摘要： The present invention is directed to a system and method of reducing frequency interference in a circuit when the harmonics of at least two frequencies could cause interference when such harmonics interact with each other. In one embodiment, a determination is made as to which harmonic could possibly support such interference, and based upon the determined harmonic, determining which combination within said determined harmonic is likely to cause the interference.

摘要翻译： 本发明涉及一种减小电路中的频率干扰的系统和方法，当这种谐波相互作用时，当至少两个频率的谐波可能引起干扰。 在一个实施例中，确定哪些谐波可能支持这种干扰，并且基于所确定的谐波，确定所述确定的谐波中的哪个组合可能导致干扰。

公开(公告)号：US20030153293A1

公开(公告)日：2003-08-14

申请号：US10014760

申请日：2001-12-11

申请人： Microtune (Texas), L.P.

发明人： Kurt J. Richter ,  Jerry T. Bolton

IPC分类号： H04B001/10

CPC分类号： H03D7/165

摘要： Disclosed are systems and methods which utilize an image reject mixer in an out-of-band mixer application such as in a forward data channel frequency converter. For example, according to a preferred embodiment, an image reject mixer is utilized to provide a relatively high degree of image rejection with respect to an out-of-band signal, thereby relaxing the requirement for filtering in the signal path leading to the mixer circuitry. Preferred embodiments of the invention are substantially or fully implemented utilizing integrated circuit technology.

摘要翻译： 公开了在诸如前向数据信道变频器之类的带外混频器应用中利用图像抑制混频器的系统和方法。 例如，根据优选实施例，使用图像拒绝混合器来提供相对于带外信号的相对较高程度的图像抑制，从而放宽对通向混频器电路的信号路径中的滤波的要求 。 使用集成电路技术实质上或完全实现本发明的优选实施例。

公开(公告)号：US20120121041A1

公开(公告)日：2012-05-17

申请号：US12945584

申请日：2010-11-12

申请人： Stefan Volnhals

发明人： Stefan Volnhals

IPC分类号： H04L27/00

CPC分类号： H04B1/0003 ,  H04B1/0007 ,  H04B1/006 ,  H04B1/18

摘要： A radio system comprises a front-end receiver for receiving a RF signal and converting the RF signal into a digital payload signal. The system further comprises a base-band processor for processing the digital payload signal, and a serial data interface over which the front-end communicates the digital payload signal and meta data to the base-band processor. The meta data may comprise information indicating whether a corresponding digital payload signal communicated over the serial data interface is valid and additional information of the front-end status, e.g. gain or state of tuning.

摘要翻译： 无线电系统包括用于接收RF信号并将RF信号转换成数字有效载荷信号的前端接收机。 该系统还包括用于处理数字有效载荷信号的基带处理器和串行数据接口，前端将数字有效载荷信号和元数据传送到基带处理器。 元数据可以包括指示通过串行数据接口传送的对应的数字有效载荷信号是否有效的信息和前端状态的附加信息，例如， 增益或调谐状态。